test262/test/built-ins/WeakSet/proto-from-ctor-realm.js

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JavaScript

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 23.4.1.1
esid: sec-weakset-iterable
description: Default [[Prototype]] value derived from realm of the newTarget
info: |
[...]
2. Let set be ? OrdinaryCreateFromConstructor(NewTarget,
"%WeakSetPrototype%", « [[WeakSetData]] »).
[...]
9.1.14 GetPrototypeFromConstructor
[...]
3. Let proto be ? Get(constructor, "prototype").
4. If Type(proto) is not Object, then
a. Let realm be ? GetFunctionRealm(constructor).
b. Let proto be realm's intrinsic object named intrinsicDefaultProto.
[...]
features: [cross-realm, Reflect]
---*/
var other = $262.createRealm().global;
var C = new other.Function();
C.prototype = null;
var o = Reflect.construct(WeakSet, [], C);
assert.sameValue(Object.getPrototypeOf(o), other.WeakSet.prototype);